| 摘要 |
<p>An automatic variable-speed drive, in particular for motor vehicles, of the type comprising two pulleys, namely a driven pulley and a drive pulley (1), which are of variable diameter but of fixed distance between axes, and are connected together by a V-belt (2), the drive pulley (1) comprising thrust means (17) arranged to transmit the motion of an output shaft to the pulley and to automatically vary, proportionally to the velocity of the output shaft (7), the distance between two discs (3, 4) of the drive pulley, so as to vary the velocity of the belt (2). The thrust means act on at least one axially movable disc (4) of the drive pulley. The device comprises a friction clutch (11, 23A; 8, 9A) for connection between the thrust means and the drive pulley (1). <IMAGE></p> |
